LED Drivers
Products (53)
BCR320UE6327HTSA1 - 250mA Linear LED Driver, 27V, SC-74-6 | Infineon
The Infineon BCR320UE6327HTSA1 is a 250 mA linear constant-current LED driver IC housed in a 6-pin PG-SC74 (SOT-26 equivalent) surface-mount package, designed to drive low- and mid-power LEDs in general lighting and automotive applications. It accepts a wide 1.4 V to 27 V supply input and regulates a fixed output current of approximately 250 mA, eliminating the need for an external current-setting resistor while keeping the BOM extremely small. A linear LED driver is a semiconductor device placed in series with the LED string that absorbs the excess voltage between the supply rail and the LED forward voltage, holding current constant through a built-in reference and sense transistor. Within the broader product hierarchy, the BCR320U belongs to the linear LED driver class, which sits under LED drivers, then power management ICs, then semiconductor ICs. By operating in the linear region rather than switching, the BCR320U introduces zero switching ripple onto the LED current, producing visually flicker-free output - critical for interior lighting, dashboard backlights, and indicator lamps where stroboscopic effects are unacceptable. Key specifications include 250 mA nominal output current, a 1.4 V to 27 V input range, integrated reverse-polarity protection, and a typical negative temperature coefficient of -0.2 %/K that progressively reduces output current as junction temperature rises - a built-in thermal foldback that protects both the driver and the LED from thermal runaway. The integrated reverse-polarity MOSFET eliminates a discrete protection component, shrinking the footprint for space-constrained PCB designs. Architecturally, the BCR320U combines an internal bandgap reference, a sense resistor, and a pass transistor monolithically, so the only external components required are the supply bypass capacitor and the LEDs themselves. The device is qualified to AEC-Q101, allowing deployment under the hood and in other harsh automotive electrical environments. Typical applications include automotive interior lighting such as dome lights and reading lamps, instrument cluster backlighting, status and indicator LEDs in white goods, signage and channel-letter illumination, and low-power architectural accent lighting. Compared to a discrete resistor biasing scheme, the BCR320U delivers uniform brightness across multiple LEDs regardless of forward-voltage variation and significantly extends LED lifetime by limiting inrush and thermal stress. When designing with this part, ensure adequate copper area beneath the exposed pad to keep the junction temperature within the -40 C to +150 C operating range. Place the input bypass capacitor as close as possible to the VCC pin to suppress voltage transients on long automotive wiring harnesses, and observe the maximum input voltage of 27 V including load-dump excursions. This page combines distributor pricing tiers, AEC-Q101-grade drop-in alternatives, and practical PCB layout notes that go beyond the manufacturer datasheet to help engineers select and source the BCR320U for next-generation LED lighting designs.
BCR431UXTSA1 - 36.5mA Linear LED Driver, 42V | Infineon
The Infineon BCR431UXTSA1 is a 36.5 mA constant-current linear LED driver housed in a 6-pin PG-SOT23-6 surface-mount package. It integrates a single-channel linear regulator with internal current setting, eliminating the need for an external current-sense resistor, and supports supply voltages up to 42 V at the input. The fixed 36.5 mA output is trimmed at the Infineon factory, providing tight tolerance without external calibration. A linear LED driver (also called an LED current regulator or constant-current sink) is a type of power management IC that delivers a regulated current to a string of one or more LEDs. Linear drivers sit within the broader hierarchy of power management semiconductors: linear LED driver -> constant-current regulator -> LED driver -> power management IC. They are preferred over switching LED drivers in applications requiring low EMI, small PCB area, and minimum BOM cost. Key features of the BCR431UXTSA1 include its 36.5 mA preset output current with ±10% tolerance across the full operating range, a wide 1.4 V to 42 V supply input range, low headroom voltage of typically 0.6 V, and integrated reverse-polarity protection at the output. The SOT23-6 footprint occupies less than 9 mm² of board space, allowing placement close to the LED load. Architecturally, the BCR431UXTSA1 uses a high-side current-mirror reference and an integrated bipolar pass transistor to regulate the output current. This topology keeps the LED cathode referenced to ground, simplifying heatsinking and PCB layout. Because the device is a linear controller, thermal dissipation equals (VIN - VLED_STACK) x IOUT, so engineers must budget the SOT23-6 31 C/W θJA accordingly. Typical applications include small LED signs, channel-letter illumination, architectural cove lighting, and 24 V industrial signaling strips where EMI from switchers must be avoided. The 42 V input ceiling also suits 36 V industrial bus rails. When designing with the BCR431UXTSA1, ensure that the worst-case VIN - VLED total stays below the 42 V absolute maximum and that the SOT23-6 power dissipation does not exceed the thermal envelope. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CDM10V3XTSA1 - 1kHz PWM Linear LED Driver, 25V | Infineon
The Infineon CDM10V3XTSA1 is a linear, single-output LED driver IC housed in a 6-pin SOT-23 (PG-SOT23-6) package, designed for low-power LED dimming applications. It supports PWM dimming at a nominal 1 kHz frequency with a 5 mA operating current, and operates across a supply voltage range of 11 V to 25 V, making it suitable for 12 V and 24 V LED lighting rails. The IC integrates the LED current-setting circuitry internally, allowing engineers to drive an external MOSFET with a minimal external BOM. A linear LED driver is a semiconductor device that regulates current through one or more LEDs by dissipating excess voltage as heat across an external pass element (typically a MOSFET or BJT) operating in its linear region. In the broader power management hierarchy, the CDM10V3XTSA1 sits below DC-DC switching LED drivers and buck/boost converters, and is preferred in applications where low EMI, small PCB area, and minimal component count outweigh the need for high efficiency. This category of driver is widely used in architectural lighting, signage, and decorative strips where noise-sensitive analog or RF circuitry is nearby. Key features include a single linear output stage, on-chip PWM dimming logic, and a wide 11 V to 25 V input range that supports both 12 V and 24 V nominal rails. The 1 kHz default PWM frequency provides flicker-resistant dimming for human-eye perception. Its low component count and small SOT-23-6 footprint enable designs in space-constrained form factors. The 5 mA nominal operating current keeps standby consumption low for always-on lighting networks. The CDM10V3XTSA1 uses internal reference and PWM generation circuitry to modulate the gate of an external N-channel MOSFET, producing constant average current through the LED string. The PWM duty cycle, settable via an external analog/digital signal, controls effective LED brightness. The 11 V to 25 V range allows engineers to power multiple LEDs in series while keeping headroom for the external pass device. Typical applications include architectural LED strips, decorative mood lighting, signage and channel-letter illumination, indicator and accent lighting, 12 V/24 V portable lighting modules, and emergency lighting fixtures. In all of these, the part's linear topology provides flicker-free dimming without the EMI footprint of a switching converter. When designing with the CDM10V3XTSA1, the dominant design trade-off is thermal: linear drivers dissipate VIN minus VLED_string as heat in the external MOSFET. Ensure the pass device is rated for the worst-case VIN and full LED current, and provide adequate copper pour on the drain tab. This page synthesizes datasheet specifications, distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
CDM10VD3XTSA1 - 0-10V Dimming Interface IC, SOT-23-6 | Infineon
The Infineon CDM10VD3XTSA1 is a fully integrated 0-10V dimming interface IC housed in a 6-pin SOT-23 package, designed to convert analog 0-10V control signals into a fixed-frequency PWM current output that drives an external optocoupler. The device operates over a wide supply range and delivers a regulated 5 mA or 1 mA constant-current PWM signal for direct optocoupler drive in isolated LED driver stages. A 0-10V dimming interface IC is a specialized power management component that translates legacy analog lighting control signals (typically used in commercial building automation, DALI-adjacent systems, and 1-10V fluorescent retrofits) into a digital-isolated control input for modern PWM LED driver controllers. It belongs to the broader category of LED driver support ICs within power management semiconductors, sitting logically between the dimmer wall switch and the primary-side LED driver controller. Key features include selectable 1 mA or 5 mA output current with 5% regulation accuracy, an integrated PWM generator operating at approximately 1 kHz, on-chip voltage regulator that derives logic supply from the dimmer input, and built-in hysteresis to prevent flicker during dim transitions. The device is targeted for various dimming applications in lighting and supports analog voltage inputs from a 0-10V dimmer, potentiometer, or PWM input from a lighting controller. The CDM10VD3XTSA1 is one of four variants in the CDM10VD family, each offering a different feature subset to match specific application needs. Internally, the IC combines a precision shunt regulator, an oscillator, and a PWM modulator that converts the DC dimmer voltage into a duty-cycle-modulated current sink. The wide operating temperature range of -40C to +105C supports both indoor commercial and outdoor industrial luminaires. Typical applications include 0-10V dimmable LED downlights, troffers, panel lights, and outdoor streetlights, plus isolated AC-DC LED driver modules for commercial fixtures. The SOT-23-6 footprint allows placement in extremely compact driver PCBs and is compatible with standard automated SMT assembly lines. When designing with this device, ensure the input current limit resistor is sized per the datasheet to set the 1 mA or 5 mA operating point, and route the PWM output trace directly to the optocoupler LED anode with a short, low-impedance path to minimize EMI. The dimmer return path (typically GND or a dedicated DIM- wire) must be kept separate from power-stage ground to avoid noise coupling. This page synthesizes distributor pricing, SOT-23-6 drop-in alternatives, application guidance, and pin-level design notes that are not collected in the manufacturer datasheet PDF alone.
CDM10VD4XTSA1 - 0-10V Dimming Controller IC SOT-23-6 | Infineon
The Infineon CDM10VD4XTSA1 is a fully integrated 0-10V dimming interface controller IC housed in a 6-pin SOT-23 (PG-SOT23-6) surface-mount package. It converts analog voltage signals from a 0-10V dimmer, potentiometer, or PWM input into a fixed-frequency, current-based PWM output (5 mA sink / 1 mA source) that directly drives an external optocoupler for isolated LED dimming control. A dimming controller IC is a specialized power management device that bridges low-voltage analog or digital dimming commands and the high-voltage/current domain of an LED driver. In the system hierarchy, a 0-10V dimming controller sits between the user-interface dimmer (wall control, DALI gateway, or potentiometer) and the primary LED driver IC, providing galvanic isolation via an optocoupler. This category belongs to power management ICs (PMICs) -> specialized PMICs -> lighting control ICs. Key features include integrated 0-10V input interpretation, automatic current sourcing/sinking to match dimmer type (current source or current sink), fixed-frequency PWM output with anti-flicker smoothing, and a compact SOT-23-6 footprint that targets space-constrained LED driver PCBs. The IC supports both linear (0-10V) and logarithmic dimming curves to match human eye perception. Technically, the CDM10VD4XTSA1 uses on-chip comparators and reference circuitry to interpret the 0-10V input, then generates a 1 kHz-class PWM duty cycle proportional to the dim level. The 5 mA sink / 1 mA source current drive is matched to standard optocoupler LED forward current requirements, eliminating the need for external drive transistors. Anti-flicker logic ramps the duty cycle gradually during light-up and light-down transitions. Typical applications include 0-10V dimmable LED downlights, troffers, panel lights, architectural dimming fixtures, DALI-to-0-10V gateways, and PWM-input retrofit modules. It is qualified for industrial and commercial LED lighting per relevant safety and EMC standards. When designing with the CDM10VD4XTSA1, place the input filter capacitor close to the VCC and DIM pins to reject mains-coupled noise, and use a bypass capacitor on the optocoupler primary side to limit switching transients. Ensure the DIM input is protected against reverse wiring and ESD per IEC 61000-4-2. This page synthesizes distributor pricing, drop-in same-brand variants, datasheet pinout, and practical PCB design notes that are not consolidated in the manufacturer datasheet, providing actionable information for LED driver engineers.
CDM10VXTSA1 - 0-10V Dimming Controller PMIC | Infineon
The Infineon CDM10VXTSA1 is a fully integrated 0-10V dimming interface IC housed in a 6-pin PG-SOT23-6 surface-mount package, designed to provide a compact, single-chip solution for 0-10V analog LED dimming systems. It operates from a supply voltage range of 11V to 25V (covering common 12V/15V/18V/24V lighting rails), consumes approximately 3 mA of quiescent current, and integrates a constant-current sink for the dimming control line together with an internal 5V LDO that powers the control logic. The device accepts a 0-10V analog dim input and translates it into a PWM dimming signal at the DIM output pin for the downstream LED driver IC. A dimming controller PMIC is a specialized power management integrated circuit that bridges an analog lighting-control protocol (such as 0-10V, DALI, or PWM) and the digital/PWM input of an LED driver stage. In the broader component taxonomy, the CDM10V belongs to the PMIC family, which sits under power management ICs, then under the larger category of signal-chain and power semiconductors. Its primary role is to absorb the analog control voltage and isolate the sensitive control circuitry from the high-current LED driver. Key features of the CDM10VXTSA1 include integrated 0-10V current sink (typ. 100-200 µA sourcing for 10V input), built-in 5V LDO output for powering external microcontrollers, low quiescent current draw (~3 mA), wide 11V-25V supply range, and active-low PWM output with up to 1 mA drive. The integrated LDO eliminates the need for an external regulator in many designs, reducing BOM count and PCB area. The device is qualified to industrial temperature ranges of -40 °C to +125 °C. The CDM10VXTSA1 uses a bipolar-CMOS-DMOS mixed-signal architecture that combines low-voltage analog control blocks, a bandgap reference, an integrated pass transistor for the 5V LDO, and DMOS output stages for the dim line and PWM dim output. This co-integration enables very few external components - typically just bypass capacitors and the 0-10V input resistor divider - while still delivering robust line-transient immunity on industrial lighting bus voltages. Typical applications include 0-10V dimmable LED downlights and troffers, commercial fluorescent-to-LED retrofit lamps, architectural and theatrical dimming systems, emergency lighting with dim control, and smart lighting fixtures that pair the CDM10V with a wireless module receiving commands from a 0-10V gateway. The IC is also used in DALI-to-0-10V translation boards. When designing with the CDM10VXTSA1, ensure the supply rail stays within 11V-25V and provide a 100 nF ceramic bypass capacitor close to the VCC pin. The 0-10V dim input is current-sinking, so the dimmer wall controller must source the 0-10V signal - do not connect the dim input directly to a low-impedance voltage source. The DIM output is open-drain and requires a pull-up resistor to the driver's reference rail. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, providing an SEO/AEO-optimized reference for engineers selecting a 0-10V dimming controller.
FLS3247N - Single-Stage PFC PSR Offline LED Driver | onsemi
The onsemi FLS3247N (originally Fairchild Semiconductor) is a single-stage power-factor-corrected, primary-side-regulation (PSR) offline LED driver with an integrated power MOSFET, housed in a 7-pin DIP (DIP-7) package and operating at a 65 kHz switching frequency. It integrates a PWM controller and high-voltage power switch in one device for low-power flyback LED driver converters. An offline LED driver IC is a power management IC that converts AC mains input into a regulated constant current for LED strings. In the power-management hierarchy, the FLS3247 sits within the AC-DC offline switcher family, specifically the flyback converter topology, and eliminates the need for a secondary-side feedback circuit by sensing output information from the primary-side auxiliary winding. Key features include single-stage PFC operation with constant on-time control for high power factor and low THD, primary-side regulation that removes the optocoupler and secondary feedback components, an integrated power MOSFET that reduces BOM count, and built-in protection functions for robust offline operation. According to the onsemi FLS3217/FLS3247 datasheet, the single-stage topology requires no input bulk capacitor or feedback circuitry, minimizing cost and board area. Technically, the device implements a quasi-resonant-style flyback controller with constant on-time modulation via an external capacitor on the COMI pin, achieving good power factor without a dedicated PFC stage. The integrated MOSFET handles the switching duty, and the controller provides cycle-by-cycle current limiting for fault resilience. Typical applications include LED bulbs, T8/T5 LED tube lamps, LED ceiling and downlights, and other sub-20W-class offline luminaires where cost, power factor, and form factor dominate the design. Design consideration: because PSR regulates from the auxiliary winding, tightly coupled transformer windings and careful magnetics design are essential to maintain output current accuracy over line and load. This page synthesizes distributor data, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet.
ICL5102XUMA2 - PFC + Resonant HB LED Driver | Infineon
The Infineon ICL5102XUMA2 is a highly integrated AC-DC LED driver IC combining a power factor correction (PFC) controller and a resonant half-bridge (HB) controller in a single 16-pin PG-DSO-16-23 package, designed for LCC and LLC topologies in solid-state lighting. It accepts a universal input range of 70V to 325V, supports fixed or variable switching frequency control, and provides a half-bridge switching frequency up to 1.3 MHz, enabling compact magnetic designs for high-power LED drivers and industrial power supplies. An AC-DC LED driver is an integrated power management IC that converts mains AC voltage into a regulated DC current for driving high-brightness LEDs. The ICL5102 specifically integrates a PFC stage with a resonant half-bridge stage, eliminating the need for a separate PFC controller IC and reducing the overall BOM count. This combination IC category sits within the broader hierarchy of LED driver ICs -> power management ICs -> integrated circuits -> semiconductors, and is optimized for high-efficiency, high-power-factor lighting applications. Key specifications include support for LCC and LLC resonant topologies, integrated 600V half-bridge gate drivers, burst-mode operation for low standby power, and comprehensive protection features including over-current, over-voltage, over-temperature, and brown-out protection. The device operates with adaptive dead-time control to optimize efficiency across load conditions. Its 70V-325V universal input range enables global design reuse for 110V and 220V mains without component changes. Architecturally, the ICL5102 uses a fixed or variable switching frequency control scheme with a combined PFC + resonant controller topology. The resonant HB stage supports both LCC and LLC tank circuits, allowing designers to select the optimal topology for their application's efficiency and cost targets. The integrated high-voltage startup cell reduces external component count. Typical applications include high-power LED street lights, industrial high-bay luminaires, horticultural lighting drivers, and AC-DC power supplies requiring high power factor and resonant conversion. The wide input range also supports flyback-forward and boost-PFC front-end stages in industrial systems. When designing with the ICL5102, engineers should pay close attention to the resonant tank component selection and feedback loop compensation to achieve optimal efficiency and THD performance. The integrated PFC + HB topology requires careful PCB layout to minimize noise coupling between the PFC and resonant stages. According to the Infineon datasheet, the burst-mode threshold should be configured based on the minimum load requirement of the application to maintain high efficiency at light load. This page synthesizes distributor pricing from DigiKey, Mouser, and LCSC, parametric drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing actionable information for power supply and lighting engineers.
ILD6150XUMA1 - 60V 1.5A Buck LED Driver IC | Infineon
The Infineon ILD6150XUMA1 is a 60 V, 1.5 A high-efficiency step-down (buck) LED driver IC housed in a thermally optimized PG-DSO-8-27 surface-mount package. Designed by Infineon's ILD6000 family for high-power LEDs and LED arrays, it integrates the power switch and supports analog/PWM dimming via a built-in 1.6 kHz PWM generator. According to the Infineon datasheet, the ILD6150 supports input voltages from 4.5 V to 60 V and delivers up to 1.5 A average LED current with hysteretic control for simple, inductor-based buck topologies. A buck LED driver (also called a step-down LED driver) is a switching DC-DC converter that regulates current through an LED string by lowering a higher input voltage to the LED forward voltage. Buck drivers sit within the broader category of constant-current switching regulators, which are themselves a subset of power management ICs (PMICs). Compared to linear LED drivers, switching buck drivers achieve much higher efficiency (typically 90%+) at high VIN-VLED deltas, eliminating the need for bulky heatsinks. The ILD6150's wide VIN range makes it compatible with both 12 V/24 V industrial buses and 48 V automotive/architectural lighting rails. Key features include integrated over-current protection, adjustable over-temperature protection, an enable pin for power sequencing, and analog dimming via an external reference voltage or PWM signal. The hysteretic control architecture eliminates the compensation network design typically required for peak-current-mode controllers, simplifying PCB layout and reducing BOM count to an inductor, a Schottky diode, an input capacitor, and a sense resistor. Typical applications include architectural and commercial LED lighting, signage backlighting, emergency vehicle lighting, off-grid solar LED systems, and industrial machine-vision illumination. With a 60 V absolute-maximum rating, the ILD6150 also tolerates load-dump transients common in 24 V truck and bus electrical systems. When designing with the ILD6150, place the Schottky diode and inductor close to the SW pin to minimize parasitic inductance, and choose an inductor with a saturation current rating at least 30% above the programmed LED current. Avoid exceeding the 60 V absolute-maximum VIN at all times, including transients, and use a low-ESR ceramic input capacitor rated for the full VIN range.
ILD8150EXUMA1 - 80V Buck LED Driver 1.5A | Infineon
The Infineon ILD8150EXUMA1 is an 80V DC-DC buck LED driver IC with hybrid dimming down to 0.5%, 1.5A output, and a high-side integrated switch, housed in an 8-pin PG-DSO-8-27 package. It is designed to drive high-power LEDs in general lighting applications, providing a high safety voltage margin for circuits operating close to safe extra-low voltage (SELV) limits. A buck LED driver is a type of switching-mode power supply (SMPS) that steps down a higher DC input voltage to a lower DC output voltage suitable for powering an LED string. Buck drivers sit within the broader hierarchy of LED driver topology -> DC-DC converter -> power management IC -> semiconductor, and are commonly used in place of linear LED drivers when VIN-VOUT headroom is large and efficiency matters. Key features include a wide 4.5V to 80V input voltage range, up to 1.5A average LED current, 0.5% minimum hybrid dimming depth, and a PWM input range of 250 Hz to 20 kHz. The flicker-free modulation frequency of 3.4 kHz is generated internally. Protection features include over-temperature shutdown, over-current protection, and over-voltage protection on the output. The ILD8150E/ILD8150 uses a hysteretic buck controller topology with an integrated high-side 80V capable MOSFET. This enables a low BOM count (single inductor, input/output capacitors, and sense resistor), while still achieving tight LED current regulation over a wide input voltage and load range. Average current mode control provides good line and load transient response. Typical applications include commercial and residential LED luminaires, architectural lighting, downlights, spotlights, track lights, and emergency lighting where wide VIN margin and high-quality dimming are required. A key design consideration is inductor selection: choose an inductor with saturation current at least 30% above the programmed ILED and DCR below 100 mOhm for high efficiency. Place the input capacitor and freewheeling diode loop as short as possible to minimize switching noise.
IR2156STRPBF - 600V Ballast Control IC, 14-SOIC | Infineon
The Infineon IR2156STRPBF is a fully integrated ballast controller and 600V half-bridge gate driver housed in a 14-pin SOIC (0.154", 3.90 mm width) package. It targets fluorescent lamp ballast applications with an internal bootstrap MOSFET, programmable preheat frequency, programmable preheat time, internal ignition ramp, programmable over-current threshold, programmable run frequency, and programmable dead time, operating over a supply range of 11.5 V to 15.6 V with an internal 15.6 V zener clamp diode on VCC. What is a ballast controller? A ballast controller is a specialized power management IC that drives the half-bridge power stage of a fluorescent or HID lamp ballast. It manages the lamp's life cycle across preheat, ignition, and run phases while enforcing protection thresholds. Within the broader taxonomy, a ballast controller belongs to gate drivers -> driver ICs -> power management ICs -> semiconductor devices, and it is the central control element in any electronically ballasted lamp. Key features include a 36 kHz to 44 kHz programmable oscillator range, 1 mA typical quiescent supply current, internal 15.6 V zener clamp on VCC, DC-bus under-voltage reset with hysteresis, shutdown pin with hysteresis, and over-current fault protection on the CS pin. The high-side driver tolerates up to 600 V offset, allowing direct connection to the half-bridge switching node without external level-shift circuitry. The IC integrates a high-voltage half-bridge driver with low-side and high-side gate outputs that switch external power MOSFETs or IGBTs at the resonant tank frequency. The bootstrap circuit supplies the high-side gate, simplifying PCB layout and reducing external component count compared to discrete gate-drive solutions. The internal ignition ramp and programmable preheat/run sequencing are tuned by external resistor-capacitor networks at dedicated timing pins. Typical applications include T8/T5/T12 fluorescent lamp ballasts, compact fluorescent lamp (CFL) ballasts, high-intensity discharge (HID) lamp ballasts, and electronic transformers for halogen lighting. The wide 600 V high-side offset allows use on universal AC mains (90 VAC to 265 VAC) when paired with a PFC front-end. When designing with this device, decouple VCC with a low-ESR ceramic or electrolytic capacitor placed close to the VCC pin, and size the bootstrap diode and capacitor according to the high-side switching frequency to keep the bootstrap refresh within the dead-time window. Program CS threshold via Rcs to limit fault current in non-strike or open-filament conditions. This page synthesizes distributor pricing, drop-in alternatives, and practical ballast design notes not found in the manufacturer datasheet alone, including cross-brand equivalents and parametric comparison data for engineers evaluating second-source options.
IRS9102CXTSA1 - 12A VCSEL/LED Laser Driver IC | Infineon
The Infineon IRS9102CXTSA1 is a 12 A laser diode / LED driver IC purpose-built for indirect Time-of-Flight (iToF) image sensors, packaged in the compact 10-lead PG-TSNP-10-4 surface-mount package. According to the Infineon product page, it delivers up to 12 A peak laser current with 250 MHz modulation bandwidth and integrated fail-safe protection, and it is designed to pair directly with Infineon's REAL3 iToF image sensor family while remaining usable in laser distance sensors (LDS) and LiDAR front-ends. A laser driver is a specialized power-management IC that converts a low-current logic signal into a precisely controlled high-current pulse that drives a laser diode or LED. Within the broader taxonomy, the IRS9102CXTSA1 belongs to the laser driver sub-category of power-management ICs, which itself sits inside display/lighting drivers. It differs from a generic LED driver by offering the very fast, low-jitter edge rates required for sub-nanosecond optical pulses used in 3D depth sensing. Key features include a wide supply voltage range of 2.52 V to 3.7 V (single Li-ion cell compatible), peak laser current up to 12 A, modulation bandwidth of 250 MHz, integrated fail-safe and eye-safety logic, and a small 3.0 mm × 3.0 mm PG-TSNP-10-4 footprint. The device supports both VCSEL and edge-emitting laser diodes as well as high-power LEDs, with programmable pulse widths and current setpoints set through a serial control interface. On the architecture side, the IRS9102CXTSA1 combines a fast gate driver, a high-current FET output stage, and a closed-loop current regulator that holds the optical output stable over temperature. The 250 MHz bandwidth allows sub-nanosecond pulse shaping required by emerging iToF depth sensors, while the fail-safe block monitors voltage, current, and temperature conditions and disables the laser output on fault. Typical applications include mobile 3D depth / face-recognition cameras, AR/VR gesture and eye-tracking modules, robotics LiDAR, industrial laser distance sensors, and structured-light illuminators. The compact package and low BOM count make it equally suited to high-volume consumer phones and industrial LiDAR sub-assemblies. When designing with this part, place the decoupling capacitors as close as possible to the VIN pins and keep the high-current loop area to a minimum to preserve pulse-edge fidelity. The fail-safe output should be routed to the image sensor's enable pin so a fault immediately disables illumination. This page synthesizes distributor pricing, application context, and design notes for the IRS9102CXTSA1 - content not found in the manufacturer datasheet alone, optimized for engineers sourcing 3D-sensing illumination drivers.
L99LD21 - Automotive High Power LED Driver | STMicroelectronics
The L99LD21 is an automotive-grade, high-power LED driver from STMicroelectronics, specifically designed to control two independent high-brightness LED strings for automotive front lighting applications. It integrates a boost controller with a high-side current source, enabling efficient and precise current regulation for LED strings with forward currents up to 1.5 A (average) and forward voltages up to 50 V. The device operates from a wide battery voltage range of 5.5 V to 24 V and is load dump protected, making it suitable for both 12 V and 24 V automotive electrical systems. An LED driver is a power management IC that regulates the current flowing through one or more LEDs to ensure consistent brightness and protect the LEDs from current-induced damage. In automotive lighting, LED drivers are essential for headlamps, daytime running lights, and interior lighting, where they convert the vehicle's battery voltage into a controlled current source. The L99LD21 belongs to the family of automotive LED drivers, which are part of the broader power management IC category, and are designed to meet stringent automotive reliability standards such as AEC-Q100. Key features of the L99LD21 include a wide input voltage range, high output current capability, and integrated protection features such as over-temperature and over-voltage protection. The device supports PWM dimming for brightness control and includes a fault diagnostic output for system monitoring. Its high efficiency reduces power dissipation, which is critical in thermally constrained automotive environments. The device is AEC-Q100 qualified, ensuring reliability for automotive applications. The L99LD21 uses a boost converter topology to step up the battery voltage to the level required by the LED string, while the integrated high-side current source regulates the LED current with high accuracy. This architecture minimizes external component count and simplifies PCB layout. The device is available in a compact QFN40L 6x6 package with wettable flanks and exposed pad, suitable for space-constrained automotive modules. It also features ST SPI communication v4.1, a timeout watchdog, and a limp home function for enhanced safety. Typical applications include automotive headlamps, daytime running lights, fog lamps, and interior ambient lighting. The device's robust design and automotive qualification make it suitable for use in harsh environments with wide temperature variations and electrical transients. The L99LD21 is also available as an evaluation board (L99LD21-ADIS) for development and testing. When designing with the L99LD21, it is important to ensure proper thermal management and to select external components that meet the device's specifications. The PWM dimming input allows for flexible brightness control, and the fault output can be used to implement diagnostic functions in the vehicle's lighting control unit. The device's low standby current helps reduce power consumption when the lighting system is not in use.
LM3444 - AC-DC Buck LED Driver, Analog Dimming | TI
The Texas Instruments LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high-power LEDs. It is available in a low-profile 10-pin VSSOP package or an 8-lead SOIC package. The high-frequency capable architecture allows the use of small external passive components, reducing solution size and cost. An AC-DC offline LED driver is a power management IC that converts alternating current (AC) from the mains into regulated direct current (DC) to drive LEDs. It belongs to the LED driver family within the broader power management IC category. The LM3444 uses a buck topology to step down rectified AC voltage to the level required by the LED string while maintaining constant current for consistent brightness and LED longevity. Key features include adaptive constant off-time control, which simplifies design and improves efficiency across a wide input range suitable for universal mains operation (90VAC to 265VAC). Analog dimming is supported, and a passive power factor correction circuit draws current directly from the line for most of the cycle, achieving good power factor (>0.9) without an active PFC controller. Thermal shutdown and cycle-by-cycle current limit provide robust protection. The LM3444 operates at high switching frequency (up to 1 MHz), enabling small inductors and capacitors. The internal architecture maintains constant LED current regardless of input voltage variations, and the passive PFC shaping helps reduce harmonic distortion for lighting applications. Typical applications include LED bulbs, LED tubes, LED downlights, and other general lighting fixtures that require high efficiency, small size, and good power factor. It is also suitable for industrial and commercial lighting systems needing power quality compliance. When designing with the LM3444, ensure adequate PCB copper area for heat dissipation, and choose the inductor and sense resistor carefully - they directly affect output current accuracy and efficiency. Refer to the TI datasheet for detailed design equations and component selection guidelines. Pricing examples: LM3444MM/NOPB from about $1.27 at LCSC as of 2026-08-29.
LM3444MAX/NOPB - AC-DC Offline Buck LED Driver 8-SOIC | TI
The Texas Instruments LM3444MAX/NOPB is an adaptive constant off-time AC/DC buck (step-down) constant current controller for illuminating high-power LEDs, supplied in an 8-pin SOIC (D) package with an operating temperature range of -40C to +125C. It is a single-output offline LED driver supporting analog dimming. An AC-DC offline LED driver is a power management IC that converts rectified mains voltage into a tightly regulated constant current for LED strings. Within the power electronics hierarchy, the LM3444 belongs to the switcher/LED driver class of power management ICs, complementing DC-DC converters, voltage regulators, and lighting drivers in general illumination systems. Key features include the adaptive constant off-time buck control architecture, which enables high switching frequency so that small external inductors and capacitors can be used, reducing BOM size and cost. Analog dimming is supported, and a passive power factor correction (PFC) scheme draws current directly from the line for most of the cycle, providing good power factor without a dedicated active PFC stage. According to TI product data, the part operates from a nominal 9V/12V supply and is available in a low-profile 10-pin VSSOP or this 8-lead SOIC package. The controller drives an external MOSFET in a buck topology, regulating LED current through a current-sense resistor. Its high-frequency capable architecture allows compact magnetics, making it well suited to retrofit lamp ballasts where volume is constrained. The constant off-time scheme simplifies loop compensation compared with fixed-frequency peak current mode control. Typical applications include offline LED retrofit lamps (A19, PAR, MR16 equivalents), high-bay and commercial LED luminaires, and LED drivers requiring triac-compatible dimming front ends. In each case the LM3444 delivers stable LED current despite line variation, with PFC supporting energy compliance. Design consideration: as a controller (not an integrated switch), the LM3444 requires an external MOSFET, sense resistor, and inductor; select the sense resistor value carefully since it sets LED current and directly affects efficiency and thermal stress. Verify SOA of the external FET at your peak offline bus voltage.
LP8860-Q1 - 4-Ch 150mA Automotive LED Driver | TI
The Texas Instruments LP8860-Q1 is an automotive high-efficiency LED driver with an integrated boost controller, providing four high-precision current sinks rated at 150 mA per channel. It operates from a 3 V to 48 V input range and is available in a 32-pin HLQFP (7x7 mm) package, AEC-Q100 qualified for automotive applications. An LED driver is a power management IC that regulates current through LEDs to guarantee consistent brightness and protect against overcurrent. The LP8860-Q1 belongs to the boost LED driver family, which steps up a lower input voltage to the higher voltage demanded by LED strings, integrating boost control, current sinks, and dimming logic into a complete automotive display backlighting solution. Key features include hybrid PWM and current dimming, which reduces EMI, extends LED lifetime, and increases total optical efficiency. Phase-shift PWM reduces audible noise and output ripple. The switching frequency is adjustable from 100 kHz to 2.2 MHz with spread-spectrum operation, allowing designers to avoid AM radio band interference. Brightness can be controlled by a PWM input pin, an SPI or I2C master, or both, offering flexible system integration. The device employs adaptive output voltage control based on LED string headroom, minimizing power dissipation and maximizing efficiency. Comprehensive fault protection includes LED open/short detection, overvoltage protection, and overtemperature protection. The low-EMI architecture meets stringent automotive electromagnetic compatibility requirements. Typical applications include automotive infotainment displays, instrument clusters, and heads-up displays (HUD), where its wide input range and 4x150 mA capability suit 12 V automotive systems driving multi-LED strings. Design tip: ensure proper PCB layout with adequate copper area for thermal dissipation, place the boost inductor and capacitors close to the IC, and use the ISET pin resistor to set LED current precisely. Pricing as of 2026-08-29.
LT3791EFE#PBF - 60V 4-Switch Sync Buck-Boost LED Driver | ADI
The LT3791EFE#PBF from Analog Devices is a synchronous 4-switch buck-boost LED driver controller capable of regulating LED current up to 52V with input voltages above, below, or equal to the output voltage. Housed in a 38-pin TSSOP-EP package, this controller supports a wide input voltage range and delivers high efficiency up to 98.5%. A buck-boost LED driver controller is a power management IC that regulates current through an LED string by controlling four external MOSFETs in a single-inductor topology. It can step up or step down the input voltage to maintain a constant LED current, making it essential for applications where the supply voltage varies around the LED forward voltage. This controller sits within the hierarchy of LED drivers, which are part of power management integrated circuits used in lighting systems. Key features include a 4-switch single-inductor architecture that allows VIN above, below, or equal to VOUT, synchronous switching for efficiency up to 98.5%, a wide input voltage range, and 2% output voltage accuracy. The controller supports both analog and PWM dimming, with a frequency adjustable or synchronizable from 200kHz to 700kHz. It also provides open LED and short LED protection, along with a precision current sense amplifier. The LT3791EFE#PBF uses a constant-frequency, current-mode architecture with forced-continuous operation, ensuring stable operation across all conditions. The 4-switch topology eliminates the need for a separate boost and buck stage, reducing component count and board space. The controller can regulate LED current with ±2% accuracy, and its wide input range makes it suitable for automotive, industrial, and general lighting applications. Typical applications include automotive headlamps, industrial lighting, and high-power LED drivers. The device is ideal for battery-powered systems where input voltage varies, such as in vehicles or portable equipment. Its ability to operate with input voltages above or below the LED string voltage makes it versatile for various LED configurations. When designing with this controller, ensure proper PCB layout for the high-current switching paths and adequate thermal management for the external MOSFETs. The frequency synchronization pin allows multiple controllers to operate at the same frequency, reducing EMI in multi-channel designs.
LT3791EFE#TRPBF - 60V 4-Switch Sync Buck-Boost LED Driver | ADI
The LT3791EFE#TRPBF from Analog Devices is a synchronous 4-switch buck-boost LED driver controller designed to regulate LED current up to 52V with input voltages above, below, or equal to the output voltage. Housed in a 38-pin TSSOP-EP package, this controller supports constant-frequency, forced-continuous current mode operation, enabling efficient and accurate LED current regulation across a wide input range. A buck-boost LED driver controller is a specialized power management IC that combines step-down (buck) and step-up (boost) topologies to maintain a regulated output current regardless of whether the input voltage is higher or lower than the LED string voltage. This makes it ideal for automotive, industrial, and general lighting applications where input voltage variations are common. The LT3791 belongs to the family of switching regulators, specifically DC-DC controllers, which are essential in power management systems for converting and regulating electrical power efficiently. Key features include a wide 4.7V to 60V input voltage range, adjustable switching frequency from 200kHz to 700kHz, and the ability to synchronize to an external clock. The controller provides analog and PWM dimming, with PWM dimming capable of achieving high contrast ratios. Its 4-switch architecture allows seamless transitions between buck, boost, and buck-boost modes, ensuring stable operation across the entire input range. The device also includes features such as open LED protection, short-circuit protection, and a precision current sense amplifier. Technically, the LT3791 uses a current mode control architecture with a 4-switch synchronous topology, which improves efficiency by eliminating the need for external Schottky diodes. The controller can drive external N-channel MOSFETs, allowing designers to scale the solution to high-power applications. The forced-continuous current mode ensures predictable operation and simplifies EMI filtering. The device operates over a -40°C to 125°C junction temperature range, making it suitable for harsh environments. Typical applications include automotive LED lighting (headlights, daytime running lights), industrial lighting, and general-purpose constant-current LED drivers. Its wide input range and high output voltage capability make it particularly well-suited for LED strings in series, where the total forward voltage can be significant. When designing with the LT3791, careful attention must be paid to the switching node layout and the selection of external components, such as inductors and MOSFETs, to ensure stable operation and meet EMI requirements. The datasheet provides detailed application circuits and component selection guidelines.
MC33XS2410ELR2 - Quad 100mOhm 60V SPI High-Side Switch | NXP
The NXP Semiconductors MC33XS2410ELR2 is a four-channel self-protected high-side switch with integrated SPI control and an embedded 12-bit analog-to-digital converter, operational from 3.0 V to 60 V and housed in a 28-pin HTSSOP (TSSOP28) package with exposed pad. Each channel presents 100 mOhm on-resistance, with a configurable architecture allowing two channels to be paralleled for dual 50 mOhm operation, and per-channel current capability up to 3.6 A as listed by distributors. A high-side switch is a power-switching element placed between the supply rail and the load, controlling power delivery while keeping the load referenced to ground. Within the power management hierarchy - semiconductor, power driver IC, load switch, smart high-side switch - devices like the MC33XS2410 combine the power MOSFET, gate driver, and protection logic into one surface-mount component, replacing discrete protection circuits. Key features include the wide 3.0 V to 60 V operating supply range, SPI-based digital control and diagnostics, an integrated 12-bit A/D converter for on-chip monitoring of load current and voltages, and comprehensive protection functions typical of self-protected smart switches. This integration drastically simplifies hardware design and MCU software overhead, as NXP states in the product data sheet (Rev. 8, 7 July 2023). The device has been qualified to the appropriate automotive standard, making it suitable for in-vehicle electronic control units. Digital current sensing through the embedded ADC allows precise load diagnostics, open-load and short-circuit detection without external shunt resistors or amplifiers, reducing bill-of-material cost in automotive and industrial power distribution modules. Typical applications include automotive body-control module relay and LED loads, resistive and inductive loads in power distribution boxes, and industrial 24 V load switching where diagnostic feedback over SPI is required. Design consideration: because the part supports both 100 mOhm quad and 50 mOhm dual-channel configurations, verify the parallel-channel configuration and thermal design against worst-case continuous load current early in the design. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with prices as of 2026-09-13.
TAS5760L 21W Stereo I2S Class-D Audio Amplifier | TI
The Texas Instruments TAS5760L (TAS5760LDDCA) is a flexible, general-purpose stereo Class-D speaker amplifier with a digital I2S input serial audio port, delivering 21 W per channel in stereo or 42 W mono into a BTL load from a single 4.5 V to 16.4 V supply in a 48-pin HTSSOP package with exposed thermal pad. A Class-D audio amplifier is a switching amplifier that uses PWM modulation of power output stages to achieve efficiencies far above linear Class-AB designs, typically above 85-90 percent. Within the power-management and audio-signal-chain hierarchy, the TAS5760L sits between a digital audio source (SoC, DSP, or MCU with I2S/TDM output) and the loudspeaker, integrating DAC, processing, and power stage in one IC, reducing board area and EMI-filtering complexity compared to discrete solutions. Key features include both hardware-mode (strap-pin) and software-mode (I2C) control, an integrated digital clipper that protects speakers from overdriven signals, multiple gain settings, and two speed modes supporting a wide range of audio clock configurations. The 48-pin package also integrates a headphone or line-output driver path, eliminating an external DAC-headphone amplifier in many designs. Architecturally, the TAS5760L processes the incoming I2S stream digitally - including volume, EQ-based gain options, and clipping control - before driving a closed- or open-loop PWM power stage with integrated FETs. This digital-in architecture avoids the noise and mismatch of an external analog DAC-to-amp path and keeps the audio signal in the digital domain until final amplification. Typical applications include smart speakers and voice-assistant devices, portable Bluetooth speakers, soundbars, TV audio, and general-purpose powered-speaker designs. The wide 4.5 V to 16.4 V supply range covers single lithium-ion battery packs through 12 V wall adapters. Design tip: choose hardware mode for lowest BOM cost, but software mode (I2C) unlocks the full register set for volume, EQ, and diagnostics; always provide adequate copper area under the thermal pad for the 42 W mono condition.
TEA2096T - GreenChip Dual Synchronous Rectifier Controller | NXP
The NXP Semiconductors TEA2096T is a GreenChip dual synchronous rectifier (SR) controller IC for switched-mode power supplies, driving two SR MOSFETs from an 8-pin SO (SO-8) package with an adaptive gate drive method for maximum efficiency at any load. A synchronous rectifier controller replaces the conventional output diodes of an SMPS secondary side with MOSFETs, switching them on only when forward current flows. Because a modern low-RDS(on) MOSFET dissipates far less power than a Schottky diode at high current, SR control is a key efficiency lever in the power-supply hierarchy (SR controller -> power supply controller -> power management IC). The TEA2096T is a dedicated secondary-side controller for synchronous rectification on resonant converters, such as LLC and partially resonant (quasi-resonant) topologies used in high-efficiency adapters and supplies. Key features include two integrated driver stages for driving two SR MOSFETs, an adaptive gate-drive scheme that maximizes efficiency across the full load range, and GreenChip design principles that minimize standby and light-load losses. Dedicated sensing inputs allow the controller to detect the conduction state of each SR MOSFET and prevent cross-conduction and premature turn-off, which protects efficiency gains in continuous-conduction and burst modes. Technically, the device handles the challenging SR timing problem in resonant converters: because resonant tank current is sinusoidal, naive SR control causes body-diode conduction losses or reverse-current events. The TEA2096T adaptively adjusts turn-on and turn-off timing based on measured drain-source voltage behavior, ensuring the SR MOSFETs conduct only during the proper current interval. This is especially valuable at light load and in discontinuous operation, where fixed-timing SR controllers lose efficiency or risk shoot-through. Typical applications include LLC resonant converters in notebook adapters, USB-PD chargers, LED TV power supplies, server and telecom auxiliary supplies, and high-density industrial power modules where secondary-side diode loss dominates. Two driver channels allow a center-tapped secondary or full-wave SR arrangement from a single controller. Design consideration: proper layout of the sense connections is critical; keep the drain-sense traces short and away from gate-driver loops to avoid false triggering from dv/dt, and follow NXP layout guidance in the TEA2096T datasheet. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TLC6C5712QPWPRQ1 - 12-Ch AEC-Q100 LED Driver | Texas Instruments
The Texas Instruments TLC6C5712QPWPRQ1 is an automotive-grade 12-channel constant-current-sink LED driver with full diagnostics and PWM dimming, delivering up to 75 mA per channel from a 3 V to 5.5 V supply in a 28-pin HTSSOP (PWP) package. Per the TI product page, the device is qualified to AEC-Q100 for -40C to +125C operation. A constant-current-sink LED driver is a type of linear LED driver IC that regulates the current flowing through each LED string by sinking a precisely controlled current to ground. Within the power-management hierarchy, it sits under LED drivers -> linear current regulators -> power management ICs. Unlike simple resistive ballast or open-drain switches, a constant-current sink holds LED brightness constant despite forward-voltage variation, supply drift, and temperature change, which is essential for color and brightness consistency. Key features include 12 independent current-sink outputs rated at 75 mA each, PWM-based dimming for precise brightness control, and a comprehensive diagnostic suite that detects open-circuit, short-circuit, and other fault scenarios. TI designed this device specifically for safety-critical automotive cluster lighting, where system-level functional-safety considerations demand per-channel fault detection to maintain brightness and color-temperature consistency across many LEDs. Technically, the device uses a 12-bit architecture with internal current-setting registers and serial control, allowing the microcontroller to program per-channel current and read back diagnostic status. The current-sink topology is linear, adding no switching noise to the LED rails, while PWM dimming achieves wide-range average brightness without color shift. Output voltage rating of 7 V provides headroom for LED stack variation. Typical applications include automotive instrument-cluster backlighting, indicator and telltale LEDs, and other safety-critical multi-channel LED lighting in vehicles. The 12-channel density reduces BOM count versus discrete transistor solutions while adding diagnostics unavailable in discrete designs. A key design consideration is thermal dissipation: at 75 mA per channel with a large LED-headroom voltage, package power dissipation must be checked against the HTSSOP PowerPAD thermal capability, using copper pour under the pad. This page adds value beyond the datasheet by synthesizing distributor pricing, availability, drop-in alternative analysis, and practical design notes in one place.
TLC6C5724QPWPRQ1 - 24-Channel 50mA LED Driver, AEC-Q100 | TI
The Texas Instruments TLC6C5724QPWPRQ1 is an automotive-grade 24-channel constant-current RGB LED driver with full LED diagnostics, delivering up to 50 mA per output channel in a 38-pin HTSSOP (PWP) package with exposed pad. It features 7-bit dot correction with two ranges per output, 8-bit group intensity control per color group, and 12-, 10-, or 8-bit PWM dimming resolution. A constant-current LED driver is a type of power management IC that regulates current (rather than voltage) through LED strings. Because LED brightness and color depend directly on forward current, constant-current drivers eliminate the brightness variation that plagues simple resistive ballast designs. Within the power management hierarchy, the TLC6C5724-Q1 belongs to the linear LED driver family with integrated PWM dimming and dot correction, positioned as a system-level solution for matrix and string LED lighting control. Key differentiating features include the per-channel 7-bit dot correction with two selectable current ranges, which lets a single design compensate for LED forward-voltage binning across red, green, and blue dies; group-level 8-bit intensity control that simplifies color calibration; and a selectable 12-bit PWM engine supporting dimming ratios suited to automotive interior and exterior lighting. The full-diagnostics subsystem detects open-circuit and short-circuit LED faults, output shorts to GND, and provides fault reporting for functional-safety-oriented designs. Architecturally, the TLC6C5724-Q1 combines a constant-current sink per channel with an external resistor that sets the full-scale 50 mA maximum output current, a serial data interface for configuration, and an on-chip diagnostic engine that scans LED health during operation. Grayscale and dot-correction data are latched internally, allowing PWM dimming to continue glitch-free while new data shifts in, an important behavior for seamless brightness transitions. Typical applications include automotive RGB ambient interior lighting, rear combination lamps and turn indicators, architectural and accent lighting, and RGB status or backlighting in industrial displays. Its AEC-Q100 qualification and full diagnostics make it especially suitable for safety-relevant exterior lighting where fault reporting is required. When designing, set the external current-setting resistor so the 50 mA absolute maximum per-channel current is respected across temperature, and budget thermal dissipation for the worst-case channel currents in the exposed-pad HTSSOP package with an adequate copper pour. This page synthesizes verified distributor data, drop-in same-family alternatives, AEO-optimized FAQs, and practical design notes not found in the manufacturer datasheet.
TLD11141EPXUMA1 - 180mA 40V LITIX Basic+ LED Driver | Infineon
The Infineon TLD11141EPXUMA1 is a single-channel high-side LED driver IC from the LITIX Basic+ family, delivering up to 180 mA of regulated constant current to a high-side connected LED load from a 40 V supply rail, housed in a 14-pin PG-TSDSO-14 surface-mount package with exposed thermal pad. It integrates an output stage and a single-channel driver, supporting both DC operation and PWM dimming for accurate brightness control across automotive and industrial lighting. Background Knowledge: An LED driver IC is a specialized constant-current source that regulates the current through a high-brightness LED (HB-LED), protecting it from supply transients and thermal runaway while enabling brightness control. The category hierarchy is: LED driver -> lighting driver -> power management IC -> semiconductor. High-side drivers, like the TLD1114-1EP, place the current source between the supply rail and the LED anode, leaving the LED cathode at ground, which simplifies wiring in chassis-grounded systems and avoids ground-shift issues. This makes them ideal for automotive body and tail-light applications where one terminal is chassis-referenced. The TLD11141EPXUMA1 delivers up to 180 mA per channel, supports a wide 5.5 V to 40 V supply range (load-dump tolerant), and provides PWM dimming capability for variable brightness. Its integrated output stage minimizes external component count, while built-in protection features include over-temperature shutdown, short-circuit protection, and reverse-polarity robustness typical of Infineon's LITIX Basic+ family. The PG-TSDSO-14 exposed-pad package provides low thermal resistance, allowing reliable operation at the device's rated current. Internally, the device uses a precision bandgap reference and a current-sense architecture that regulates output current independent of LED forward voltage variations across temperature. The high-side drive topology simplifies PCB routing and supports parallel-channel configurations via multiple TLD1114-1EP devices for higher-current LED strings or multi-channel lighting systems. Typical applications include automotive tail lights, brake lights, daytime running lights (DRL), interior ambient lighting, status indicators, and industrial signage. The PWM dimming interface allows direct connection to a microcontroller for dynamic brightness adjustment, supporting safety features such as dynamic turn signals. When designing with this device, observe the maximum junction temperature rating and use adequate PCB copper area on the exposed pad to maintain thermal performance. Always verify the output current setting resistor value against the LED manufacturer's recommended forward current, and add an input capacitor close to the supply pin for load-dump and EMI robustness. This page synthesizes distributor stock data, drop-in alternative MPNs from the LITIX Basic+ family, and practical thermal/design guidance that goes beyond the manufacturer datasheet excerpts.